Method for making concrete by using calcareous sand

A technology of concrete and calcium, which is applied in the field of concrete materials, can solve the problems of difficulty in obtaining materials, increase the cost and difficulty of engineering construction, and high cost of land river sand transportation, and achieve the effect of increasing strength and improving economic benefits

Inactive Publication Date: 2019-12-20
HEFEI UNIV OF TECH
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Problems solved by technology

[0016] In the construction process of marine engineering, the preparation of traditional quartz sand concrete has encountered difficulties. The cost

Method used

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  • Method for making concrete by using calcareous sand
  • Method for making concrete by using calcareous sand
  • Method for making concrete by using calcareous sand

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Embodiment Construction

[0032] The target preparation of C30 concrete is calculated and determined according to the "Concrete Mix Proportion Design Regulations (JGJ55-2011)".

[0033] Calculated: water-binder ratio: 0.56. The slump is 75-90mm, and the water consumption of concrete can be calculated: 215kg / m 3 .

[0034] Cement amount = water amount ÷ water-binder ratio = 385kg / m 3 . The sand rate is 38%, 1m 3 The quality of concrete is taken as 2350kg, and fine aggregate = 665kg, coarse aggregate = 1084kg. Table 1 shows the amount of calcareous sand concrete material per cubic meter. Among them, group A was used as the reference group.

[0035] serial number Cement / kg water / kg Sand / kg Stone / kg fiber / kg A 385 215 665 1084 0 B 385 215 665 1084 2 C 385 215 665 1084 4 D 385 215 665 1084 6

[0036] Table 1

[0037] Make a 150mm×150mm×150mm standard sample. In order to make the basalt fiber evenly distributed in the concrete sample, add st...

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Abstract

The invention relates to the technical field of concrete materials, in particular to a method for making concrete by using calcareous sand. The concrete is prepared from the following components in parts by weight: 665 parts of calcareous sand, 2-6 parts of fiber, 385 parts of concrete, 1084 parts of stone and 215 parts of water. The method has the beneficial effects that local materials can be used, economic benefits of engineering construction is improved, meanwhile, due to the fact that the strength of the calcareous sand is low, the strength of the concrete mixed by using the calcareous sand as fine aggregates is low, by adding basalt fiber into the concrete, the strength of the concrete can be significantly improved, and the needs of engineering construction are met.

Description

technical field [0001] The invention relates to the technical field of concrete materials, in particular to a method for making concrete by using calcareous sand. Background technique [0002] Calcareous sand includes calcareous sand, coral sand, which in turn is obtained from coral reefs. The reef-building coral polyp is a kind of coelomate in the sea. It can absorb calcium dioxide and other calcium substances in seawater, and secrete calcium carbonate through its own digestion and absorption as its own outer body protection shell; the reef-building coral polyp lives Together, after many generations of reproduction, their bodies and outer body protective shells are bonded and petrified to form a relatively special rock and soil material, namely coral reefs. Coral reefs can be divided into two categories: primary coral reefs and secondary coral reefs. Generally speaking, coral reefs formed when the body and calcareous shell of reef-building corals (referring to soft coral p...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B14/02C04B14/06C04B14/4643
Inventor 姚华彦马登辉崔绍军陈清
Owner HEFEI UNIV OF TECH
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